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Fabrication of binary FeSe superconducting wires by diffusion process

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8 Author(s)
Ozaki, T. ; National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan ; Deguchi, Keita ; Mizuguchi, Yoshikazu ; Kawasaki, Yasuna
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We report successful fabrication of multi- and mono-core FeSe wires with high transport critical current density Jc using a simple in-situ Fe-diffusion process based on the powder-in-tube (Fe-diffusion PIT) method. The seven-core wire showed transport Jc of as high as 1027 A/cm2 at 4.2 K. The superconducting transition temperature Tczero was observed at 10.5 K in the wire-samples, which is about 2 K higher than that of bulk FeSe. The Fe-diffusion PIT method is suitable for fabricating multi-core wires of the binary FeSe superconductors with superior properties.

Published in:

Journal of Applied Physics  (Volume:111 ,  Issue: 11 )

Date of Publication:

Jun 2012

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